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1
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4Published 1978“...HC 687 .P3 .B181 1978...”
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6
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12Published 1977“...HD 9195 .A2 .C674...”
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15Published 1986“...HD 9018 .D4 .P879...”
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16Published 1978“...HC 547 .I8 .T915...”
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19Published 1984“...HD 9715 .D442 .C758...”
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20